 | | Journal (issue) | | Finger) and LKA Emeralds, Hiddenite, Alexander County, NC Go On Public Exhibit in New York City. Emeralds.................................... 2 Himalaya pegmatite,.................................................................................. 2 Unnamed pegmatite occurrence, Volcan Mountains ........................................... 3 Brown Derby no. 1 pegmatite ............................................................................... 3 Ridgefield pegmatite,............................................. |  | Sirbescu, M.-L. C., Leatherman, M. A., Student, J. J., Beehr, A. R. (2009) APATITE TEXTURES AND COMPOSITIONS AS RECORDS OF CRYSTALLIZATION PROCESSES IN THE ANIMIKIE RED ACE PEGMATITE DIKE, WISCONSIN, USA. The Canadian Mineralogist, 47 (4) 725-743 doi:10.3749/canmin.47.4.725 | Journal (article/letter/editorial) | | CRYSTALLIZATION PROCESSES IN THE ANIMIKIE RED ACE PEGMATITE DIKE, WISCONSIN, USA Mona-Liza C. SIRBESCU§, Mark...314 Brooks Hall, Mount Pleasant, Michigan 48859, USA Alison R. BEEHR Department of Earth and Planetary...63130-4862, USA Abstract Unidirectional and skeletal textures in the thin inward-crystallizing Animikie Red...Red Ace (ARA) pegmatite dike, in northeastern Wisconsin, suggest rapid, disequilibrium crystallization of...of the outer zones as the pegmatite-forming magma came in contact with much cooler country-rocks. The |  | | Journal (article/letter/editorial) | | crystallization of the Animikie Red Ace Pegmatite, Florence county, northeastern Wisconsin: inclusion microthermometry...evaluated the crystallization regime of a zoned pegmatite dike and the degree of magma undercooling at the...assemblages. The liquidus temperature of the pegmatite magma was *720°C, based on re-melting of crystallized-melt...exsolved from hotter, still crystallizing inner pegmatite units. The huge temperature contrast between the...inclusion assemblages Microthermometry LCT pegmatite Numerical simulation Undercooling Communicated |  | | Journal (article/letter/editorial) | | Falster in recognition of his research on pegmatites and pegmatite minerals (e.g., columbite-group minerals...geochemistry of NYF-type pegmatites of the Wausau complex in Marathon County, Wisconsin (Falster, Buchholz...Simmons 2013), and the LCT-type pegmatites of Florence County, Wisconsin (Falster, Simmons, and Webber...been a coauthor on the descriptions of seven new pegmatite minerals: esperanzaite (Foord et al. 1999a), simmonsite...core margin of the Palermo No. 1 pegmatite, North Groton, Grafton County, New Hampshire. It occurs in small |  | | Journal (article/letter/editorial) | | Harrisonburg, VA 22801. Microcline feldspar in pegmatites often displays a blue-green color and is given...lead. Sixty-four samples from nine worldwide pegmatite localities were quantitatively analyzed to compare...Florissant, Colorado; the Zapot pegmatite, Mineral County, Nevada; Carroll County, New Hampshire; the Morefield...ROCKS & MINERALS matites of Amelia County, Virginia; Wisconsin; Tordal, Norway; Russia; and Matawatawa...correlation. Three samples of amazonite from Amelia County, Virginia, repeatedly showed Pb concentration below |  | | Report (issue) | | granite pegmatites. Association: Elbaite, pollucite, manganoan apatite, lepidolite, quartz, albite (Manjaka...schiavinatoite, rhodizite, elbaite–liddicoatite, quartz, feldspar (Antsongombato, Madagascar). Distribution:...Madagascar. In the Animikie Red Ace pegmatite, near Pine River, Florence Co., Wisconsin, USA. Name: To honor...National Museum of Natural History, Washington, D.C., USA, 139602. References: (1) Mrose, M.E. and H.J. Rose |  | | Report (issue) | | 05 ]Σ=0.98 . (2) Little Three mine, California, USA; corresponds to Be2.00 B1.00 O3 [(OH)0.70 F0.30 ]Σ=1...Occurrence: An uncommon accessory mineral in granite pegmatites. Association: Beryl, danburite, apatite, spodumene...spodumene, zircon, fluorite, feldspar, quartz. Distribution: From Helgeroa, Langesundsfjord, Norway....Bity; and large crystals from Anjanabanoana. In the USA, fine crystals from the Little Three mine, near Ramona...Co., California; large crystals from the Zapot pegmatite, 25 km northeast of Hawthorne, Mineral Co., Nevada; |  | | Report (issue) | | Madagascar; B2 O3 by ICP, SiO2 6.23% assumed as quartz; calculated neglecting impurities, corresponds...late-stage accessory mineral in alkali-rich granite pegmatites. Association: Londonite, elbaite, spodumene...spodumene, beryl, béhierite, albite, microcline, quartz. Distribution: Found near Sarapulka and Shaitanka,...In the USA, found in the Animikie Red Ace pegmatite, near Pine River, Florence Co., Wisconsin. Name:...Name: From the Greek for rose-colored, for the rose-red color the mineral imparts to the blowpipe flame. References: |  | | Journal (article/letter/editorial) | | DISTRIBUTION IN COLUMBITE-TANTALITE FROM THE MOREFIELD PEGMATITE, AMELIA, VIRGINIA. J. M Ayer.s and L. E. Kearns...Columbite-tantalite crystals from the Morefield pegmatite in Amelia County, Virginia, were analyzed for Ta, Nb,...from fifty-seven sites along the 65.9 meters of pegmatite exposed at the 6O-foot mine level. The analyses...the length of the pegmatite, but the samples tend to be more Ta-rich near the quartz core and more Nb-rich...NIOBIUM-TANTALUM MINERALS FROM THE ANIMIKIE RED ACE PEGMATITE, FLORENCE COUNTY, WISCONSIN. A. U. Foister, W. B. Simmons |  | | Journal (article/letter/editorial) | | rapid emplacement and crystallization of granite pegmatites: resolving the paradox of large crystals in highly...2009 Ó Springer-Verlag 2009 Abstract Granite pegmatite sheets in the continental crust are characterized...large crystals. There has been a shift in viewing pegmatites as products of very slow cooling of granite melts...about the role of H2O in the petrogenesis of pegmatites. Based on data on nucleation of minerals and...essential component in the petrogenesis of granite pegmatites. H2O is key to reducing the viscosity of granite |  | Kampf, A. R., Mills, S. J., Simmons, W. B., Nizamoff, J. W., Whitmore, R. W. (2012) Falsterite, Ca2MgMn2+2(Fe2+0.5Fe3+0.5)4Zn4(PO4)8(OH)4(H2O)14, a new secondary phosphate mineral from the Palermo No. 1 pegmatite, North Groton, New Hampshire. American Mineralogist, 97 (4) 496-502 doi:10.2138/am.2012.4008 | Journal (article/letter/editorial) | | secondary phosphate mineral from the Palermo No. 1 pegmatite, North Groton, New Hampshire Anthony R. Kampf...Department, Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, California...mineral from the Palermo No. 1 pegmatite in North Groton, Grafton County, New Hampshire, U.S.A., and also...also occurs at the Estes pegmatite quarry, Baldwin, Cumberland County, Maine, U.S.A. It formed as the...schoonerite, secondary phosphate, Palermo No. 1 pegmatite, New Hampshire, U.S.A. Introduction The new mineral |  | | Journal (article/letter/editorial) | | Michigan, plus a small portion of northeastern Wisconsin. This includes the famous Marquette and Eastern...range, home of the well-known Montreal mine in Wisconsin. (My collecting experience has not extended to...of the story, as they say, is history. Marquette County alone would eventually have 247 iron mines (Mulligan...identified only as to district or range (e.g., “Iron River” or “Marquette Range”); many were not labeled at...many years. Maquette County Marquette County is the easternmost Iron Country county and also the oldest |  | | Journal (article/letter/editorial) | | as an essential element are found in granitic pegmatites and alkalic rocks or in hydrothermal deposits...geologic record: the oldest known is beryl in pegmatites associated with the Sinceni pluton, Swaziland...with highly fractionated rare-element granitic pegmatites and with skarns at Långban and similar deposits...Ma, which is largely attributable to granitic pegmatites (Appalachian Mountains, U.S.A., and Urals, Russia)...Mineral age, beryllium, mineral evolution, granitic pegmatites, peralkaline complexes, supercontinent cycle |  | | Journal (article/letter/editorial) | | Sciences University of Wisconsin-River Falls 410 South Third Street River Falls, Wisconsin 54022 his is Wisconsin’s... breweries, bratwurst, and Packers football, Wisconsin also has a diverse geology and a history rich...forgotten, abandoned, and overgrown. In this respect, Wisconsin represents a frontier state for the mineral collector...quarry in Racine (Scovil 1994), the pegmatites of Florence County (Koehier 1989) and the Wausau area (Falster...summarizes and highlights what has been found in Wisconsin in the past 150 years and points the way to new |  | | Journal (article/letter/editorial) | | 165 THE LATE-STAGE MINIFLOOD OF Ca IN GRANITIC PEGMATITES: AN OPEN-SYSTEM ACID-REFLUX MODEL INVOLVING PLAGIOCLASE...Abstract As Richard H. Jahns used to say, granitic pegmatites are prone to stew in their own juice. The early...country rock, mostly from the apical parts of zoned pegmatites. There, it interacts with plagioclase in any...envision a convecting fluid phase cycling around the pegmatite body, and a reaction path that brings the acidified...acidified fluid back into the heart of the pegmatite. There, it is aggressive toward the microcline perthite |  | | Journal (article/letter/editorial) | | Pagmatites: the State of the Art”, Porto, May 2007 Pegmatite genesis: state of the art Wm. B. “Skip” SIMMONS*...University of New Orleans, New Orleans, LA 70148, USA *Corresponding author, e-mail: wsimmons@uno.edu ...Abstract: No one universally accepted model of pegmatite genesis has yet emerged that satisfactorily explains...explains all the diverse features of granitic pegmatites. Genesis from residual melts derived from the...concepts have shed light on problems related to pegmatite genesis. Cooling rates calculated from thermal |  | | Journal (article/letter/editorial) | | Norman, Oklahoma 73019 dlondon@ou.edu Reading P 2 Pegmatites: ART Downloaded by [University of California...principal environment will be that of granitic pegmatites, from which many of the finest mineral specimens...Ledge dike, Little Three mine, Ramona, San Diego County, California. Varieties of elbaite: (c) rubellite...Tourmaline Queen mine (1972), Pala district, San Diego County, California, Jesse Fisher and Joan Kureczka specimen...tourmalinite with layers of tourmaline (black) and quartz (gray), Broken Hill, New South Wales, Australia |  | Bradley, Dwight, Shea, Erin, Buchwaldt, Robert, Bowring, Sam, Benowitz, Jeff, O'Sullivan, Paul, McCauley, Andrew (2016) Geochronology and Tectonic Context of Lithium-Cesium-Tantalum Pegmatites In the Appalachians. The Canadian Mineralogist, 54 (4) 945-969 doi:10.3749/canmin.1600035 | Journal (article/letter/editorial) | | AND TECTONIC CONTEXT OF LITHIUM-CESIUM-TANTALUM PEGMATITES IN THE APPALACHIANS DWIGHT BRADLEY§,* U.S. Geological...99775 U.S.A. PAUL O’SULLIVAN GeoSep Services, 1521 Pine Cone Road, Moscow, Idaho 83843, U.S.A. ANDREW MCCAULEY...lum (LCT) and niobium-yttrium-fluorine (NYF) pegmatites occur at intervals along the Appalachian orogen...(LA-ICP-MS), and apatite fission track ages for 14 pegmatites. Based mostly on these new results, we recognize...recognize a minimum of four ages of LCT pegmatites in the Appalachians. From oldest to youngest, these are: |  | Wang, Zhen, Li, Jiankang, Chen, Zhenyu, Yan, Qinggao, Xiong, Xin, Li, Peng, Deng, Jingyi (2021) Evolution and Li Mineralization of the No. 134 Pegmatite in the Jiajika Rare-Metal Deposit, Western Sichuan, China: Constrains from Critical Minerals. Minerals, 12 (1) 45 doi:10.3390/min12010045 | Journal (article/letter/editorial) | | Evolution and Li Mineralization of the No. 134 Pegmatite in the Jiajika Rare-Metal Deposit, Western Sichuan...Evolution and Li Mineralization of the No. 134 Pegmatite in the Jiajika Rare-Metal Deposit, Western Sichuan...deposit in Asia, and the No. 134 pegmatite dike is the largest lithium pegmatite under mining conditions in...textures and minerals in the Jiajika No. 134 pegmatite, two zones (the barren Zone I and the spodumene...evolution and the cooling path of the Jiajika No. 134 pegmatite. From the outer zone inwards, grain size gradually |  | | Journal (article/letter/editorial) | | Jeffrey Scovil photo. July/August: Calcite, Gallatin County, Mon tana. American Museum of Natural Histo ry...September/October: Chalcocite, Flambeau mine, Ladysmith, Rusk County, Wiscon sin. F. John Barlow specimen, Malcolm...November/December: Chalcocite, Bristol, Hartford County, Connecticut. Jim Minette specimen, Jeffrey Scovil...Springs, 154-70 Arsenopyrite, Connecticut, 128; Wisconsin, 338 Art, see Robinson, S. Ayers, J . M., see...Contributed Papers in Specimen Mineralogy Azurite, Wisconsin, 338 Babcock, L . E . , see Media Reviews Babingtonite |  | | Journal (article/letter/editorial) | | magmatic to hydrothermal conditions in pegmatites from San Diego County, California Elizabeth M. Gammel1,*...properties and compositions of fluid inclusions in quartz are used to constrain the roles that fluid-soluble...in pegmatites and to ultimately understand why some pegmatites in the San Diego County pegmatite district...In this district, lithium-cesium-tantalum type pegmatites occur in the Mesozoic Peninsular Ranges Batholith...contain gem-quality, Li-bearing minerals. Two pegmatite suites were studied: the gem-bearing Himalaya |  | Novák, Milan, Cempírek, Jan, Gadas, Petr, Škoda, Radek, Vašinová Galiová, Michaela, Pezzotta, Federico, Groat, Lee A. (2015) Boralsilite and Li, Be-bearing "Boron Mullite" Al8B2Si2O19, Breakdown products of spodumene from the Manjaka pegmatite, Sahatany valley, Madagascar. The Canadian Mineralogist, 53 (2) 357-374 doi:10.3749/canmin.1400092 | Journal (article/letter/editorial) | | BREAKDOWN PRODUCTS OF SPODUMENE FROM THE MANJAKA PEGMATITE, SAHATANY VALLEY, MADAGASCAR MILAN NOVÁK§ Department...elbaite-subtype Manjaka granitic pegmatite, Sahatany Valley, Madagascar. The pegmatite mineral assemblage is relatively...> Ap + several accessory B-rich phases). This pegmatite forms an E–W-trending elongated body emplaced...emplaced in an Mg-rich calc-silicate rock; the pegmatite exocontact locally contains thin reaction zones (Tur+Phl±Brl)...minor extent of exocontact reactions along the pegmatite, and secondary rhodochrosite, are responsible |  | | Journal (article/letter/editorial) | | crystallization process in the San Diego County pegmatites, California, USA Jennifer S. MALONEY1,4 , Peter I...Sciences, University of Missouri, Columbia, MO 65211, USA *Corresponding author, e-mail: nabelekp@missouri...MI 48859, USA 3 Department of Geology, University of Maryland, College Park, MD 20742, USA 4 Current... 363 N. Sam Houston Parkway, Houston, TX 77060, USA 5 Current address: Institut für Geowissenschaften...lithium-cesium-tantalum-type pegmatite dikes of San Diego County, California, USA, tourmaline is the main |  | | Journal (article/letter/editorial) | | minerals and cassiterite from the Black Mountain pegmatite, Maine MICHAEL A. WISE* and CATHLEEN D. BROWN...Smithsonian Institution, Washington, DC, 20560, USA *Corresponding author, e-mail: wisem@si.edu Abstract:...Ta-,Sn-oxide minerals from the Black Mountain pegmatite has revealed the presence of discrete crystals...fractionation as commonly observed in F-enriched granitic pegmatites. Micrograins of CGM typically show higher Ta/(Ta...Key-words: cassiterite, columbite-group minerals, pegmatite, Black Mountain, Maine. 1. Introduction and |  | | Book | | ROCKHOUNDING Wisconsin A Guide to the State’s Best Sites ROBERT BEARD To the memory of my grandmother...rockhound that I ever knew, and she loved northern Wisconsin and geology. She would have been thrilled to...Beard, Robert D., author. Title: Rockhounding Wisconsin : a guide to the state’s best sites / Robert Beard...and preservation—Wisconsin—Guidebooks. | Minerals—Collection and preservation—Wisconsin—Guidebooks. Classification:...��������������������������������4 Geology of Wisconsin��������������������������������������������� |
|
